Trying to activate a Storage Lifecycle Policy (SLP) but receiving message "Duplication session in progress"
nbstlutil active -backupid <backupid>
Lifecycle manager operation active: Unable to process. Duplication session in progress. return value = 
Commands can only be run when there are no duplications running.
Run the command with the wait parameter, then it will retry when appropriate
nbstlutil -wait active -backupid <backupid>